This is an inquiry activity that allows students to investigate the differences between simple, complex, and compound sentences. This is not a review activity, but an introductory activity to the different sentence types.
To begin, students look at a variety of different sentences (grouped in simple, complex, and compound), writing down the similarities between the sentences within each group. After finding patterns in the sentence type groups, students will complete a three-way Venn diagram that helps them to finally create their own rules to each sentence type.
I have found that this is much better than taking notes, and the information stays with students-always a good thing!